7-TFA-ap-7-Deaza-dA is a modified nucleoside. 7-TFA-ap-7-Deaza-dA can be used in the synthesis of deoxyribonucleic acid or nucleic acid. 7-TFA-ap-7-Deaza-dA is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.